外文翻譯--慣性與電動掛車剎車.doc

重慶理工大學翻譯二級學院機械工程學院班級學生姓名原文：eHowCarRepair&MaintenanceBrakeRepair&MaintenanceRepairTrailerBrakesInertiaVs.ElectricTrailerBrakesByEdmundGary,eHowContributorDangerousTsaysmoststateshaveregulationsgoverningtrailersweighingmorethan3,000pounds.Thereislittleifanyregulationfortrailersweighingunder3,000pounds.Ifatrailerisdesignedtocarry3,000pounds,itmusthaveaworkingbrakingsystem.Twotypesofbrakingsystemsareavailable:inertiatrailerbrakesandtheelectrictrailerbrakes.BrakeControllersElectricbrakecontrollersareautomobileoriginalequipmentmanufacturedoraftermarket-installeddevicemodules.Theyactivatethetrailerbrakesandareneededifthetraileruseselectricbrakes.Thecontrollersaremountedonorunderneaththetowvehiclesinstrumentpanelonthedriversside.Thecontrollerscancomeindifferentproductclasses,suchasproportionalorinertiabrakecontrollers.ElectricTrailerBrakesElectricbrakesfeedpowerfromthetowvehiclesbrakelightsintothecontroller.Thetrailerbrakesareactivatedbyaseparateheavy-dutycircuitthroughaplugandsocket.Thisallowsthebrakestoworkautomaticallywheneverthetowvehiclesbrakesareapplied.Properlyadjustedcontrollerscanallowtowvehicleandtrailercombinationtocometoastopassmoothlyasifthetowvehiclewasbyitself.InertiaTrailerBrakesInertiaactivatedbrakesofferssmoothstoppingresponseinmostsituations.AccordingtoRVtechnicianRegDeYoung,theinertiabrakeshasaninternalsensingdeviceorapendulumwhichsensesthetowvehiclesrateofdeceleration.Thesensingdevicethenappliestheamperagetothetrailerbrakesatthesamerateofdecelerationasthetowvehicle.DrawbacksofInertiaandElectricBrakesThependulumoftheinertiabrakesmaynotswingcorrectlybecauseofchangesintheangleorchanges,andthiscanleadtojerkystops,accordingtoHensleyManufacturing.Electricbrakestendheatuptoatemperatureof300degreesFahrenheit.Thischangestheresistanceinthemagnetsinthebrakesystem,whichleadstobrakefade.ConclusionTrailerbrakesareacrucialpieceofequipmentwhenthetrailerhasreachedaspecificweightthreshold.SomestatesintheUnitedStatesmayhaveverylittleregulationoftrailerbrakesforunitsunder3,000pounds,butitisbesttocheckthelocalregulationswherethetrailerwillbeoperated.譯文：慣性與電動掛車剎車EdmundGaryDangerousT說,大多數(shù)州都規(guī)定掛車的重量超過3000磅。幾乎沒有任何監(jiān)管對于3000磅以下的掛車。如果一個拖車被設計用于攜帶3000磅,它必須有一個工作制動系統(tǒng)。兩種類型的制動系統(tǒng)是可用的:慣性掛車車剎車和電動掛車剎車。制動控制器電制動控制器是汽車原始設備是制造或售后安裝設備的模塊。他們激活掛車剎車，如果需要也激活電動剎車?？刂破鞅话惭b在牽引車的駕駛員側的儀表盤上或下方?？刂破骺梢杂胁煌漠a(chǎn)品類,如慣性制動控制器。電動拖車剎車電動剎車回饋系統(tǒng)從車輛的剎車燈回饋到電控制器中。拖車制動器是由一個單獨的電路，通過插頭和插座重新激活。這允許剎車自動工作只要掛車的剎車系統(tǒng)是應用的。如果是拖車本身，適當調整控制器可以讓牽引車和掛車組合順利停止。慣性掛車剎車激活慣性剎車系統(tǒng)在大多數(shù)情況下，能提供平穩(wěn)的停止響應。根據(jù)房車技術員RegDeYoung所說,慣性制動器有一個內部傳感裝置或一個鐘擺,感應掛車減速的速度。然后，傳感裝置應用安培數(shù)使掛車和牽引車以相同的速度減速。缺點慣量和電剎車鐘擺的擺動慣性剎車可能不正確,因為角度隨時在變化。這可能會導致不平穩(wěn)停